Louis koch



L. KOCH.

Paper Drier.

. Patefnied-March 3% 1857.

I I I IILII N4 PETERS, Phulo-Lilllogmphar. Washingtm. ucr

LOUIS noon, on NEW YORK, N. v.

MACHINERY FOR PRESSING WATER OUT OF PASTEBOARD.

Specification of Letters Patent No. 16,928, dated March 31, 1857.

To all whom it may concern:

Be it known that I, LoUIs KocH, of New York, in the county and State ofNew York, have invented a new and Improved Machine for Extracting theWater out of Pasteboard; and I hereby declare that the following is afull and exact description thereof, reference being had to theaccompanying drawings and to the letters of reference marked thereon.

The nature of my improvements consist in the arrangement of a series ofrollers and endless felts in such a manner that the formed pasteboardshall always be between two felt-s while passing between the pressingrollers for the purpose of extracting the water contained in the board,so as to leave the same, after it has passed through the last pair ofrollers, almost dry, said rollers being at the same time so arrangedthat the board shall pass between them in the opposite direction towhich the extracted water will by its own gravity flow off.

Pasteboard which has been made either in square frames or by the windingup of paper web around a roller contains about two third parts of water,which by the present arrangement takes a very long time to be extractedtherefrom.

In the accompanying drawing R R R R R and R represent pressing rollers.which run in suitable boxes and are acted upon by screws n, 01., n n a nand by which the distance between each pair of rollers can be exactlyregulated and consequently any desired pressure given to the pasteboard.Around these rollers as well as the roller R and the rollers p, m anendless felt T passes and is stretched and regulated by the movableroller D. The rollers 29 and m are situated near the forming roller Aand take the pasteboard after having been formed upon said roller A uponthe felt T by which it is carried over and between the differentpressing rollers.

N M and N M are rollers running likewise in suitable hearings in theframes of the machine, around which and the pressing rollers R and Rrespectively, that is around N M R and around N M R endless felts V andV are stretched. The rollers N and N are movableso as to be able therebyto stretch and regulate said felts V or V. By this arrangement thefelting is double from that point at which the rollers M M and therollers R R come in contact up to that point where the short felt bandsV or V run over their respective rollers N or N, so that the board afterpassing over the roller R, between the rollers R and R and until thesame has passed between the rollers R and R is between two felts, whenthe pressure of said rollers upon the board will press out the greateramount of water contained in the same. The board passes then over theroller R when it comes again between the two felts T and V and passesbetween the same, through and between the rollers R and R and betweenthe rollers R and R, where the pasteboard is again under a greatpressure, pressing out thereby as much of the remaining water aspossible and leaving the board nearly dry, when the same passes over theroller R and falls upon the table H ready to be carried to the dryingroom. The position and motion of the pressing rollers and the manner inwhich the felting passes around the same is such that the board in itscourse through said rollers comes always in the opposite direction towhich the extracted water will naturally flow, thereby preventing theonce extracted water to accumulate again in the pasteboard.

The manner of arranging the position of the pressing rollers isimmaterial. The

same may be arranged side by side or one above the other according tocircumstances as long as the felting passing over said rollers is soarranged that the board while under pressure shall always be between twothicknesses of felting and allow the water to run ofi in the oppositedirection to the introduction of the board.

The pressed out water is collected in channels w, to 4.0 Q03, whichscrape the surfaces of the rollers and carry the pressed out water tothe sides of the machine.

The rollers R and R are connected together and turned by machinery,which communicate through the endless felt motion to the other rollers,or all rollers may be connected together by gearing. By the screws a, n,&c., the distance of each pair of rollers and consequently the pressureupon boards of different thicknesses can be 105 regulated and the sameare so arranged and regulated that the pressure upon the board willgradually increase.

The rollers R R and R can be so arranged as to be heated, whereby thepaste board will be partially dried while passing over and between thoserollers.

What I claim as my invention and desire the same Without injuring theboard, during 10 to secure by Letters Patent is- The combination of thepressing rollers in connection with the rollers N-M and N 5 M arrangedwith endless felts in such a manner that the board shall be made to passbetween the pressing rollers between two thicknesses of felting, toallow the water contained in the board to be pressed out of the pressingprocess the whole being arranged in the manner and for the purposedescribed.

LOUIS KOCH.

Witnesses HENRY E. BOEDER, J. TOKENHAUSEN.

